It’s LG tv repair time again, at Bammel TV Tech Services. Customer brought in to us on May 23, 2018 his very nice 55″ LG smart TV for repair service, a 55LB5550-UY, with a complaint of “blinks, check out.” We put the flat screen tv in the service queue and prepared to perform our diagnostics.
LG Electronics is the latest iteration of the original Lucky Goldstar corporation. Founded in 1955 as Goldstar, during the rebuilding in the aftermath of the Korean War, they produced Korea’s first domestically-produced consumer electronics and home appliances. LG Electronics produced South Korea’s first radios, TVs, refrigerators, washing machines, and air conditioners. Bammel TV was for many years the authorized service center for Goldstar tv’s, and later for their full range of home electronics and appliances, including microwave ovens. We parted as friends, and we still perform occasional spot and request service for LG, on a case basis.
Together with Samsung, LG forms the “dynamic duo” of high-quality, low-cost electronics and appliance manufactures from Korea. The Koreans have totally laid waste to the giant and dominant Japanese consumer electronics firms, such as Sony, Panasonic-Matsushita, JVC, Toshiba, Sharp, Hitachi, and Mitsubishi. Japanese automobile dominance is not yet in serious question, but here too the Koreans have made serious inroads.
The 55LB5550-UY exhibited a full spectrum of 1080p grade LED-class hi-definition characteristics, including a 1920×1080 resolution with 120 hz refresh. Included were a range of connectivity optia, and good quality sound from two 10w speakers running Dolby’s digital decoder system.
After its time in queue was up, we benched the unit to the diagnostics lab of our chief technician, who made the determination of Backlight Fault: behind the display panel of modern flat screens is an array of high-intensity LED lights or lamps, and occasionally one or more of these will fail, leading to a variety of complications. In the past, we tended to quote for/replace only the actually-faulty lights, or the associated strips; but often other lamps tended to fail out. So these days, we’ve learned our lesson—we usually now replace all the LED-strips.
Summary: How we fixed an LG 55LB5550-UY TV
Our quote approved, we ordered and installed parts, and completed the TV repair. See this video for a full report and case study, from beginning to end-stage/final test, of how we fixed an LG 55LB5550-UY TV. For more examples of our art-and-science of TV repair, click here. For our main TV repair page, click here. And to get a Quick Quote on your repair, click here.
Another one bites the dust at Bammel TV Technology Services.